My (Mauled) Letter Published on the IHT

I understand Thomas Homer-Dixon and David Keith (“The ultimate sun-block,” Views, Oct. 7) when they state that it is better to study global-warming-related geo-engineering now rather than waiting. But what I do not understand is the interest in “flooding the atmosphere with manmade particles.”

Throwing colossal amounts of particles more or less at random into the sky, with no chance of retrieval, is surely a recipe for environmental upheaval.

Maurizio Morabito Orpington, England

Of course the above is a brutally shortened version of my full letter, as published in blog “Only Controllable Geo-engineering, Please!” where I did make the point that it is vital for all human anti-warming interventions to be fully controllable.

And before anybody refers to the ongoing atmospheric experiment called “the emission of additional CO2 from fossil fuels” let me clearly re-state the following: if we really need to combat the effect of the “CO2 emissions experiment” it makes no sense to experiment with a different set of emissions.